Talk:Nuclear magnetic resonance/Catalogs/Magnetic nuclei

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• all atoms whose numbers of protons and numbers of neutroms are both even will not be magnetically active OR
• all atoms whose numbers of protons and numbers of neutroms are both not even will be magnetically active

I think the second tells you which elements will show up in NMR/MRI the top line tells you which will not show up - readers might get confused Robert Tito |  Talk  16:49, 18 October 2007 (CDT)

magnets

magnets used for NMR spectra are really strong (I have used magnets up to 60 Gauss) and cooled down (nitrogen most of the time) but superconductivity played no part to create these spectra. Only good channel analyzers and patience - many spectra took the best part of 72 hours to get a signal above the noise level. Robert Tito |  Talk  17:17, 18 October 2007 (CDT)